To be honest, I love it whenever this happens! The example given here was the tax package during the Elector's meeting, but Lovely Laurelorn was also a good, if lower-key example of this. Even when he was going on a rampage through in Athel Loren, while looking like some sort of creature due being covered in blood and gore, as well as his clothes being shredded, he still did things like: saving allied soldiers getting caught out of position, immediately noting how hard to defend the clearing before the Oak of Ages ages was, and, finally, cottoning on to Drycha's gambit.
The fact that he often looks like a barbarian warrior-king from the outside, while hiding a razor-sharp mind on the inside, is one of the things I like about him as a character the most.